2010•Northern HorticultureRequires access

Effect of Different N,P,K Ratios on Yield of Autumn-Winter Tomato in Greenhouse

Dejun Zhang

Abstract

Utilizing 3414 regression design,the effect of different N,P,K ratios on yield of autumn-winter season tomato in greenhouse.the results showed that,The quantity of applying fertilizer of the maximum yield of tomato in greenhouse was nitrogen fertilizer(N):259.3 kg·hm-2,phosphate fertilizer(P2O5):196.6 kg·hm-2,potassium fertilizer(K2O):190.5 kg·hm-2,the maximum yield of tomato was 76 029 kg·hm-2;The quantity of applying fertilizer of the best yield is nitrogen fertilizer(N):249.3 kg·hm-2,phosphate fertilizer(P2O5):186.8 kg·hm-2,potassium fertilizer(K2O):183.4 kg·hm-2,the best yield of tomato is 75 987 kg·hm-2.

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Key concepts: Fertilizer, Yield (engineering), Greenhouse, Nitrogen, Potash, Potassium, Agronomy, Mathematics